dipo1

def solution(x):
    encrypted_message_characters = list(x)
    decrypted_message_characters = []
    lowercase_characters = [chr(i) for i in range(ord('a'), ord('z') + 1)]
    
    for character in encrypted_message_characters:
      if(character in lowercase_characters):
        decrypted_message_characters.append(lowercase_characters[len(lowercase_characters) - 1 - lowercase_characters.index(character)])
      else:
        decrypted_message_characters.append(character)